Vane pump

Abstract

A vane pump is disclosed. The vane pump includes at least an inner rotor and at least one vane. The inner rotor is rotatably mounted in a cage and the at least one vane is configured in at least one substantially radial slot, the slot is configured in the inner rotor, wherein the slots and the vanes are arranged asymmetrically on the inner rotor.

The invention claimed is: 
     
       1. A vane pump, comprising:
 an inner rotor rotatably mounted in a cage; and 
 a plurality of vanes which are mounted in a radially displaceable manner in substantially radial slots in the inner rotor, wherein the substantially radial slots and the plurality of vanes are arranged asymmetrically on the inner rotor relative to at least one of a vertical and horizontal axis; 
 wherein at least one of the plurality of vanes has a larger circumferential distance from a first adjacent of the plurality of vanes than from a second adjacent of the plurality of vanes; and 
 wherein the vane pump is configured as a pendulum-slider pump such that the plurality of vanes are configured as pendulums and the substantially radial slots in the inner rotor are sized to permit the plurality of vanes to rotate and slide within the substantially radial slots. 
 
     
     
       2. The vane pump according to  claim 1 , wherein the width of the substantially radial slots in the inner rotor is substantially equal. 
     
     
       3. The vane pump according to  claim 1 , wherein the plurality of vanes are pivotably mounted on the cage, which encloses the inner rotor. 
     
     
       4. The vane pump according to  claim 1 , wherein the plurality of vanes is at least six vanes. 
     
     
       5. The vane pump according to  claim 1 , wherein at least one of the substantially radial slots on the inner rotor have different dimensions. 
     
     
       6. The vane pump according to  claim 1 , further comprising a slider, which receives the cage and the inner rotor, wherein the slider is pretensioned by a spring, the spring controls a delivery rate of the vane pump. 
     
     
       7. A pendulum-slider vane pump, comprising:
 an inner rotor rotatably mounted in a cage; and 
 at least two vanes configured in at least two substantially radial slots, the at least two substantially radial slots configured in the inner rotor, wherein the at least two substantially radial slots and the at least two vanes are arranged asymmetrically on the inner rotor relative to at least one of a vertical and horizontal axis; and 
 wherein the at least two vanes are configured as pendulums and the at least two substantially radial slots in the inner rotor are sized to permit the vanes to rotate and slide within the at least two substantially radial slots. 
 
     
     
       8. The pendulum-slider vane pump according to  claim 7 , wherein at least one vane of the at least two vanes has a larger circumferential distance from a first adjacent vane than the at least one vane of the at least two vanes has from a second adjacent vane. 
     
     
       9. The pendulum-slider vane pump according to  claim 7 , wherein at least one vane of the at least two vanes is pivotably mounted on the cage, which encloses the inner rotor. 
     
     
       10. The pendulum-slider vane pump according to  claim 7 , wherein the at least two vanes is at least one of six vanes. 
     
     
       11. The pendulum-slider vane pump according to  claim 7 , wherein at least one of the at least two substantially radial slots on the inner rotor and at least one of the at least two vanes have different dimensions. 
     
     
       12. The pendulum-slider vane pump according to  claim 7 , further comprising a slider, which receives the cage and the inner rotor, wherein the slider is pretensioned by a spring, the spring controls a delivery rate of the pendulum-slider vane pump. 
     
     
       13. A vane pump, comprising:
 an inner rotor rotatably mounted in a cage; and 
 at least two vanes configured in at least two substantially radial slots, the at least two substantially radial slots configured in the inner rotor, wherein the at least two substantially radial slots and the at least two vanes are arranged asymmetrically on the inner rotor relative to at least one of a vertical and horizontal axis; 
 wherein the at least two vanes are configured as pendulums and the at least two substantially radial slots in the inner rotor are sized to permit the at least two vanes to rotate and slide within the at least two substantially radial slots; and 
 a slider, which receives the cage and the inner rotor, wherein the slider is pretensioned by a spring, the spring controls a delivery rate of the vane pump. 
 
     
     
       14. The vane pump according to  claim 13 , wherein at least one vane has a larger circumferential distance from a first adjacent vane than from a second adjacent vane. 
     
     
       15. The vane pump according to  claim 13 , wherein the width of each slot of the at least two substantially radial slots is substantially equivalent. 
     
     
       16. The vane pump according to  claim 13 , wherein the at least two vanes are pivotably mounted on the cage, which encloses the inner rotor. 
     
     
       17. The vane pump according to  claim 13 , wherein the at least two vanes is at least one of six vanes. 
     
     
       18. The vane pump according to  claim 13 , wherein at least one of the at least two substantially radial slots on the inner rotor and at least one of the at least two vanes have different dimensions. 
     
     
       19. The vane pump according to  claim 1 , wherein the substantially radial slots and the plurality of vanes are arranged at least one of rotationally asymmetric and reflectionally asymmetric. 
     
     
       20. The pendulum-slider vane pump according to  claim 7 , wherein the at least two substantially radial slots and the at least two vanes are arranged at least one of rotationally asymmetric and reflectionally asymmetric.